<template>
    <div class="wrapper">
        <el-form ref="loginForm" class="login-box" :model="form" status-icon :rules="rules" label width=" 80px" style="background-color: #fff;border-radius: 10px;position: relative;top:100px">
            <h3 class="login-title">欢迎注册</h3>
            <el-form-item label="用户名" prop="username">
                <el-input prefix-icon="el-icon-sysUser"  type="text" placeholder=" 请输入用户名" v-model="form.username"/>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input prefix-icon="el-icon-lock" type="password" placeholder=" 请输入密码" v-model=" form.password"/>
            </el-form-item>
            <el-form-item label="确认密码" prop="checkPass">
                <el-input prefix-icon="el-icon-lock" type="password" placeholder=" 请确认密码" v-model="form.checkPass" />
            </el-form-item>
            <el-form-item>
                <el-button type="primary" v-on:click="onSubmit('loginForm')">注册</el-button>
                <el-button type="primary" v-on:click="$router.push('/login')">去登录</el-button>
            </el-form-item>
        </el-form>
        <el-dialog
                title="温馨提示"
                :visible.sync="dialogVisible"
                width="30%"
                :before-close="handleClose">
            <span>请输入用户名和密码</span>
            <span slot="footer" class="dialog-footer">
<el-button type="primary" @click="dialogVisible = false">确 定</el-button>
      </span>
        </el-dialog>
    </div>
</template>
<script>
    export default {
        name: "Login",
        data() {
            var checkUsername = (rule, value, callback) => {
                if (value) {
                    this.request.get("/check?" + "username=" + value).then(res => {
                        console.log(res)
                        if(res.code!==200){
                            return callback(new Error(res.msg));
                        }else {
                            callback();
                        }
                    })
                }
            };
            var validatePass = (rule, value, callback) => {
                if (value === '') {
                    callback(new Error('请再次输入密码'));
                } else if (value !== this.form.password) {
                    callback(new Error('两次输入密码不一致!'));
                } else {
                    callback();
                }
            };
            return {
                form: {
                    username: '',
                    password: '',
                    checkPass: '',
                },
// 表单验证， 需要在el-form-item- 元素中增加prop属性
                rules: {
                    username: [
                        {required: true, message: '用户名不可为空', trigger: 'blur'},
                        {min: 3, max: 10, message: '长度在 3 到 5 个字符', trigger: 'blur'},
                        {validator: checkUsername, trigger: 'blur'}
                    ],
                    password: [
                        {required: true, message: '密码不可为空', trigger: 'blur'},
                        {min: 1, max: 20, message: '长度在 1 到 20 个字符', trigger: 'blur'},
                    ],
                    checkPass: [
                        {validator: validatePass, trigger: 'blur'},
                        {min: 1, max: 20, message: '长度在 1 到 20 个字符', trigger: 'blur'}
                    ],
                },
                //对话框显示和隐藏
                dialogVisible: false
            }
        },
        methods: {
            handleClose: function () {
                console.log("Handle Close，空函数");
            },
            onSubmit(formName) {
                //为表单绑定验证功能
                this.$refs [formName].validate((valid) => {
                    if (valid) {
                        this.request.post('/register', {
                            username: this.form.username,
                            password: this.form.password
                        })
                            .then(res => {
                                if(res.code===200){
                                    //使用vue-router 路由到指定页面，该方式称之为编程式导航
                                    this.$router.push("/login");
                                    this.$message.success(res.msg)
                                }else{
                                    console.log(res.data);
                                    this.$message.error(this.form.username+"已被注册")
                                }
                            })


                    } else {
                        this.dialogVisible = true;
                        return false;
                    }
                });
            },

        },
        created() {
            console.log(this)
        }
    }
</script>
<style scoped>
    .wrapper {
        height: 100vh;
        background-image: linear-gradient(to bottom right, #3F5EFB,#FC466B);
        overflow: hidden;
    }
    .login-box {
        border: 1px solid #DCDFE6;
        width: 350px;
        margin: 50px auto;
        padding: 35px 35px 15px 35px;
        border-radius: 5px;
        -webkit-border-radius: 5px;
        -moz-border-radius: 5px;
        box-shadow: 0 0 25px #909399;
    }

    .login-title {
        text-align: center;
        margin: 0 auto 40px auto;
        color: #303133;
    }
</style>
